
        * {
            padding: 0;
            margin: 0;
        }

        .container {
            width: 600px;
            height: 400px;
            overflow: hidden;
            position: relative;
            margin: 0 auto;
        }

        .list {
            width: 3000px;
            height: 400px;
            position: absolute;

        }

        .list>img {
            float: left;
            width: 600px;
            height: 400px;
        }

        .pointer {
            position: absolute;
            width: 100px;
            bottom: 20px;
            left: 250px;
        }

        .pointer>span {
            cursor: pointer;
            display: inline-block;
            width: 10px;
            height: 10px;
            background: #7b7d80;
            border-radius: 50%;
            border: 1px solid #fff;
        }

        .pointer .on {
            background: #28a4c9;
        }

        .arrow {
            position: absolute;
            text-decoration: none;
            width: 40px;
            height: 40px;
            background: #727d8f;
            color: #fff;
            font-weight: bold;
            line-height: 40px;
            text-align: center;
            top: 180px;
            display: none;
        }

        .arrow:hover {
            background: #0f0f0f;
        }

        .left {
            left: 0;
        }

        .right {
            right: 0;
        }

        .container:hover .arrow {
            display: block;
        }
